摘要
火力发电厂已广泛采用变频技术来实现设备的节能降耗,但变频装置的应用对传统电动机保护装置及保护配置带来很大的影响。介绍了两种运行模式下能自适应的新型电动机保护装置原理,提出了同时满足电动机在工频与变频工况下的保护配置方案,并成功应用于脱硫增压风机中,取得良好的运行效果。
Variable-frequency technology plication of converter brings great impact is widely used for saving energy in power plant. Howe on traditional motor protection and protection configura ver, the aption. The paper introduces variable-frequency operating condition as well as principles of self-adaptive new motor protection in both modes and proposes a protection configuration scheme that can meet both motors in power frequency, which are successfully used in flw gas desulphurization booster fan and achieves good effect.
出处
《浙江电力》
2013年第1期48-51,共4页
Zhejiang Electric Power
关键词
变频器
高压电动机
继电保护
电流互感器
frequency-converter
high voltage motor
relaying protection
current transformer
